1999 Toyota Camry



November, 6, 2010 AT 10:32 AM

Brakes problem
1999 Toyota Camry 6 cyl Front Wheel Drive Automatic 91,950 miles

My Trac Off light is on and won't go off by pushing the Traction Control button.
The Traction Control feature is not working.
Any help you can give us to fix this would be greatly appreciated.

1 Answer



November, 6, 2010 AT 1:22 PM

Hi enidwinters,

An error has been detected in the traction control system and you need to retrieve the trouble codes to understand what is wrong and proceeed with diagnostics and rectification.

Some speed sensor DTCs cannot be retrieved using following procedure. See SPEED SENSOR DIAGNOSTICS for retrieving other speed sensor DTCs.
NOTE: DO NOT start engine when retrieving diagnostic codes.

ABS & TRAC OFF Light Diagnostics
1. Ensure battery voltage is 12 volts. Turn ignition switch to ON position. ABS, TRAC OFF and SLIP indicator lights should illuminate, then go out after 3 seconds. If warning lights do not illuminate, check fuses, bulbs, and appropriate wiring harnesses.

2. Using a jumper wire, jumper check connector terminals Tc and E1 of DLC1 or DLC2. See Fig. 1 -Fig. 2 . If a malfunction is detected, 4 seconds will elapse and ABS or TRAC OFF indicator light will begin to flash a 2-digit Diagnostic Trouble Code (DTC). First number of blinks will equal first digit in a code. After a 1.5-second pause, second number of blinks will equal second digit in a code.

3. If 2 or more codes are stored, there will be a 2.5-second pause between each code. After all codes are flashed, there will be a 4-second pause and all codes will repeat. If ABS and TRAC system are functioning normally, and no DTCs are present, ABS and TRAC OFF indicator lights will blink 2 times per second. For code definitions, see DTC DEFINITIONS table. After replacing or repairing components, clear diagnostic codes.


For speed sensor DTCs, connect jumper wire between terminals Ts and E1 of DLC1.




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